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Within this thesis influence of thrust vectoring for VAWTs, controlling the magnitude and direction of the thrust vector with respect to the freestream, is investigated through active pitch actuation. The H-type Darrieus VAWT is modelled in 2D through the actuator cylinder model with the Mod-Lin correction included. The evaluations are performed...

Research in medicine and psychology has demonstrated that placebo treatments can lead to clinically meaningful effects which are created by the context of the treatment. Therapeutic rituals are acknowledged as the core of contextual healing effects. To design for contextual healing in clinical practice, more insight is needed in the key...

In this research a framework is proposed including factors involved for success in multi-mode standardization. This framework was applied to identify the relevant factors in the case of phosphorus recovery in form of struvite from municipal wastewater. The following eleven factors were deemed to be relevant by experts:‘financial strength’, ...

Like many rivers around the world, the Loire river in France has a history of human interventions in order to facilitate navigation and port development. Next to affecting bed levels directly, the heavy modification of the river-estuary has induced significant changes in the hydrodynamic and morphodynamic behaviour of the Loire. As a result, the...

Globally, a growing number of kidnappings executed by pirates occur each year. The current protection consists of mercenaries which are flown in by helicopter to protect merchant ships in threat areas. This is not only expensive, sometimes innocent fishermen are seen for pirates, in some cases with a lethal ending for the fishermen. An...

The superyacht industry faces an increasing trend of larger dimensions, more open spaces, larger hull openings and more exotic shapes. This puts more effort on the structural design and especially for superyacht longitudinal stiffness is important, since the luxurious interior and delicate systems installed in a superyachts are not allowed to...

The Netherlands is often depicted as a battleground, with the Dutch in a constant struggle against the water that surrounds them. This project examines this tradition in the context of the Wadden Sea and the island of Schiermonnikoog, where this battle between the land and the sea is at its most extreme.

Climate change is an inevitable fact and governments worldwide have started to recognize this by expanding the contribution of renewable energy sources to our global energy production. Wind energy is currently one of the most attractive solutions for the transition to a more sustainable energy future. Since wind energy is not the only competitor...

Mechanical metamaterials are a new emerging class of materials which achieve properties outside the bounds of conventional materials. A metamaterial consists of a unit cell which is periodically repeated in space. In this study, a new metamaterial unit cell is proposed, derived from a class of space structures known as deployable masts. What...

Objectives – Over the past decades, more and more cardiac diseases have been treated in interventional cardiology. Catheters are generally used to access the heart through the blood vessels. The previously developed steerable Sigma catheter at Delft University of Technology, tackles cable related challenges of conventional mechanically...

To evaluate traffic signal controllers, and vehicle-actuated traffic signal controllers in particular, in terms of how they are performing with respect to the road authority’s policies on traffic flow and accessibility, traffic safety, and environmental factors, several methods are developed in practice. However, in scientific literature, little...

Flotsam lines may arise on coastal dikes after a storm surge. These lines are generated when material due to debris accumulation on the foreshore has been transported onto the dike surface by wave run-up. Hydraulic engineers who used flotsam line measurements, interpreted a flotsam line as a line which is marking the highest wave run-up. In the...

Flow unsteadiness caused by impeller rotation, vortex-shedding, secondary flows etc. can lead to the generation of acoustic waves within the turbomachinery cascade. This causes pressure loading on the impeller. When acoustic resonance occurs, i.e. the frequency of acoustic wave excitation matches with the structural natural frequencies of the...

An experimental investigation on shock-shock interactions has been conducted with the aim of studying the transition between Regular (RI) and Mach interactions (MI) under the condition of variable inflow Mach number. The RI contains only oblique shocks while the MI has a quasi-normal shock segment, known as the Mach stem. MI configurations...

Haptic feedback on the side stick has been used in previous research on assisting pilots in recognising flight envelope limits. Pilots indicated, however, that it was not always clear what the haptics were trying to tell them, leading to a lower system acceptance. This paper describes the design and evaluation of a visual display in...

The starting point of this graduation project is noises that nurses experience in the ICU (Intensive Care Unit). There is a defined medical symptom which is called “alarm fatigue” that refers to numb auditory senses, stress, low job satisfaction as a result of being exposed to excessive noise for the extended period, and it often leads to low...

Locating people inside buildings is still an unsolved problem. There is a lotof research going on in this field and many different solutions using differenttechniques have been proposed. However, there is no widely accepted indoorlocalization solution like how GPS is for outdoor localization due to less accuracy, higher hardware...

This thesis proposes an innovation strategy to leverage the potential of connected vehicles for the fleet of LeasePlan, the global leader in automobile leasing and fleet management. This strategy has been developed through an extensive analysis of the internal environment, customer trends, industry developments, and emerging technologies in...

A parametric study, using the FEM-software package ABAQUS, validated on experimental results found by Abspoel, was conducted on S690 steel plate girders to address if the results of the previous researches was valid. Using a slightly different analytical model the results show the maximum web slenderness of this steel grade in both 6000 mm2 and...

Miniaturization of spacecraft has been gaining wide interest in the space industry, given its potential for reducing space missions' costs and providing a novel approach to enhancing and facilitating spaceflight. Recently, a lot of research has been successfully put into this field along with the advancements that make it more feasible, though a...